Invention Grant
- Patent Title: Liquid transporting apparatus
- Patent Title (中): 液体输送装置
-
Application No.: US11261067Application Date: 2005-10-27
-
Publication No.: US07658474B2Publication Date: 2010-02-09
- Inventor: Hiroto Sugahara
- Applicant: Hiroto Sugahara
- Applicant Address: JP Nagoya-Shi
- Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee Address: JP Nagoya-Shi
- Agency: Reed Smith LLP
- Priority: JP2004-311736 20041027
- Main IPC: B41J2/045
- IPC: B41J2/045

Abstract:
A piezoelectric actuator includes a vibration plate 30 covering pressure chambers 14 and serving also as a common electrode, a piezoelectric layer 31 arranged on the vibration plate 30 on a side opposite to the pressure chambers 14, and individual electrodes 32. The individual electrodes are each arranged on a surface of the piezoelectric layer 31 opposite to the vibration plate 30, in an area overlapping with an edge portion of the pressure chamber as viewed from a direction orthogonal to a plane in which the pressure chambers are arranged, the edge portion being an area other than the central portion of the pressure chamber. The individual electrodes are extended up to an area outside of the pressure chambers, as viewed from the direction orthogonal to the plane. A liquid transporting apparatus including the piezoelectric actuator has an excellent durability and improved drive efficiency.
Public/Granted literature
- US20060087536A1 Liquid transporting apparatus Public/Granted day:2006-04-27
Information query
IPC分类: